45243939 has 16 divisors (see below), whose sum is σ = 66350592. Its totient is φ = 27248928.

The previous prime is 45243937. The next prime is 45243943. The reversal of 45243939 is 93934254.

45243939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45243939 - 2¹ = 45243937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 45243897 and 45243906.

It is not an unprimeable number, because it can be changed into a prime (45243931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10509 + ... + 14174.

It is an arithmetic number, because the mean of its divisors is an integer number (4146912).

Almost surely, 2^45243939 is an apocalyptic number.

45243939 is a deficient number, since it is larger than the sum of its proper divisors (21106653).

45243939 is a wasteful number, since it uses less digits than its factorization.

45243939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24746.

The product of its digits is 116640, while the sum is 39.

The square root of 45243939 is about 6726.3614978679. The cubic root of 45243939 is about 356.3308873886.

The spelling of 45243939 in words is "forty-five million, two hundred forty-three thousand, nine hundred thirty-nine".